Champion 2500-Watt Ultralight Inverter vs Firman W01785
What is the difference?
The Champion 2500-Watt Ultralight Inverter has 1.85 kW of running power, 2.5 kW peak. The Firman W01785 has 1.7 kW of running power, 2.1 kW peak.
The Champion 2500-Watt Ultralight Inverter weighs 38 lb, the Firman W01785 weighs 46 lb. The Champion 2500-Watt Ultralight Inverter is easier to carry.
The Champion 2500-Watt Ultralight Inverter can add extra batteries.
Specs side by side
| Champion 2500-Watt Ultralight Inverter | Firman W01785 | |
|---|---|---|
| Running W | 1850 | 1700 |
| Peak W | 2500 | 2100 |
| Fuel | gasoline | — |
| Tank (gal) | 1.1 | — |
| Run time @50 % (h) | — | — |
| Noise (dB) | 53 | — |
| CO shutoff | — | yes |
| Weight (lb) | 38 | 46 |
| Warranty (yr) | 3 | — |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-10-26 / 2026-11-04. Specs one maker does not list are left out of the comparison. Sponsored links; we may earn a commission.
Common questions
Which has more running watts, Champion 2500-Watt Ultralight Inverter or Firman W01785?
The Champion 2500-Watt Ultralight Inverter. More running watts: 1850 W vs 1700 W.
Which is lighter, Champion 2500-Watt Ultralight Inverter or Firman W01785?
The Champion 2500-Watt Ultralight Inverter. Lighter: 38 lb vs 46 lb.
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Compare other models → · All Champion models · All Firman models